Machine Maintenance Flashcards
Easiest way to guard your investment in you equipment is to?
Perform regular maintenance.
What suffers when machinery is not properly maintained?
Physical safety
Quality of work
Scheduled maintenance refers to?
Predetermined timetable that states intervals which maintenance tasks take place.
Preventative maintenance refers to?
Doing regular maintenance to prevent a break down.
Important to read before moving a piece of machinery?
Manual so you know where you suppose to lift it from or how.
Assists in levelling and prevent further vibration when the machine is in operation?
Stiff Rubber Pads
Most suppliers of machinery will offer a package that covers what?
Parts and Labour on the machine however if it has not been properly maintained they will not cover it and your warranty will be voided.
What’s a Sign off sheet?
Written confirmation of requested maintenance was performed and is functioning properly.
Critical for producing a quality machined surface in wood?
Sharp Knives
KMPI Formula?
RPM x Number of knives / 12 x Feed rate (ft/min)
Dull knives may result in ?
Machine burn
Chipped/Torn grain
If the cutter develops a loss of clearance angle because it is blunted it may?
Compress the surfaces fibers
What is a Gib? what does it do?
Steel bar that sits in a slot in the cylindrical cutterhead.
Applies uniform and positive pressure along the entire length of the knife.
Describe Gib bolts?
Usually have a domed top and hexagonal shape
The slot machined in the cutter head that receives the Gib and Knife is milled with?
Slopping sides so that the slot is narrower in the front.
How is a Gib face machined?
Machined with a curve or a ramp that approaches close to the cutting edge of the knife
What does the shape and position of the gib also allow it to do?
Acts as a chip breaker and chip limiter.
Indexing refers to?
Adjustment of the knife to bring it into line with the cutting circle.
What is a cutting circle?
It describes the maximum extent or projection of the circular path through which all knives run.
The outer edge of the knife determines the cutting circle
Indexing may be done manually by?
Using a magnet to draw out the knife to its proper location while you tighten it in place.
In some jointers and planers what can adjust the indexing of each knife?
Allen key can be turned
Assists you in placing knives into a cutter head?
Location pins
Allow for a knife to be quickly changed and bring the knife into the proper position.
